Merge "Revert submission"
diff --git a/Android.bp b/Android.bp
index 8d0c1ea..c73c3da 100644
--- a/Android.bp
+++ b/Android.bp
@@ -206,6 +206,7 @@
     ],
     testSrcs: [
         "cc/cc_test.go",
+        "cc/compiler_test.go",
         "cc/gen_test.go",
         "cc/genrule_test.go",
         "cc/library_test.go",
diff --git a/android/androidmk.go b/android/androidmk.go
index b66fd18..4893bf4 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -230,9 +230,6 @@
 		}
 		a.SetBoolIfTrue("LOCAL_ODM_MODULE", Bool(amod.commonProperties.Device_specific))
 		a.SetBoolIfTrue("LOCAL_PRODUCT_MODULE", Bool(amod.commonProperties.Product_specific))
-		// TODO(b/135957588) product_services_specific is matched to LOCAL_PRODUCT_MODULE
-		// as a workaround. Remove this after clearing all Android.bp
-		a.SetBoolIfTrue("LOCAL_PRODUCT_MODULE", Bool(amod.commonProperties.Product_services_specific))
 		a.SetBoolIfTrue("LOCAL_SYSTEM_EXT_MODULE", Bool(amod.commonProperties.System_ext_specific))
 		if amod.commonProperties.Owner != nil {
 			a.SetString("LOCAL_MODULE_OWNER", *amod.commonProperties.Owner)
diff --git a/android/config.go b/android/config.go
index 63994e6..1e5a24d 100644
--- a/android/config.go
+++ b/android/config.go
@@ -1087,6 +1087,10 @@
 	return c.productVariables.EnforceSystemCertificateWhitelist
 }
 
+func (c *config) EnforceProductPartitionInterface() bool {
+	return Bool(c.productVariables.EnforceProductPartitionInterface)
+}
+
 func (c *config) ProductHiddenAPIStubs() []string {
 	return c.productVariables.ProductHiddenAPIStubs
 }
diff --git a/android/module.go b/android/module.go
index a6b8d53..e8d7360 100644
--- a/android/module.go
+++ b/android/module.go
@@ -365,11 +365,6 @@
 	// /system/product if product partition does not exist).
 	Product_specific *bool
 
-	// TODO(b/135957588) Product_services_specific will be removed once we clear all Android.bp
-	// files that have 'product_services_specific: true'. This will be converted to
-	// Product_speicific as a workaround.
-	Product_services_specific *bool
-
 	// whether this module extends system. When set to true, it is installed into /system_ext
 	// (or /system/system_ext if system_ext partition does not exist).
 	System_ext_specific *bool
diff --git a/android/variable.go b/android/variable.go
index abbdf21..25a5dc0 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -309,6 +309,8 @@
 	TargetFSConfigGen []string `json:",omitempty"`
 
 	MissingUsesLibraries []string `json:",omitempty"`
+
+	EnforceProductPartitionInterface *bool `json:",omitempty"`
 }
 
 func boolPtr(v bool) *bool {
diff --git a/apex/apex.go b/apex/apex.go
index 477f917..f03a8f9 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -652,6 +652,7 @@
 
 	testApex        bool
 	vndkApex        bool
+	artApex         bool
 	primaryApexType bool
 
 	// intermediate path for apex_manifest.json
@@ -1261,6 +1262,19 @@
 		return false
 	})
 
+	// Specific to the ART apex: dexpreopt artifacts for libcore Java libraries.
+	// Build rules are generated by the dexpreopt singleton, and here we access build artifacts
+	// via the global boot image config.
+	if a.artApex {
+		for arch, files := range java.DexpreoptedArtApexJars(ctx) {
+			dirInApex := filepath.Join("javalib", arch.String())
+			for _, f := range files {
+				localModule := "javalib_" + arch.String() + "_" + filepath.Base(f.String())
+				filesInfo = append(filesInfo, apexFile{f, localModule, dirInApex, etc, nil, nil})
+			}
+		}
+	}
+
 	if a.private_key_file == nil {
 		ctx.PropertyErrorf("key", "private_key for %q could not be found", String(a.properties.Key))
 		return
@@ -1875,9 +1889,10 @@
 	return module
 }
 
-func ApexBundleFactory(testApex bool) android.Module {
+func ApexBundleFactory(testApex bool, artApex bool) android.Module {
 	bundle := newApexBundle()
 	bundle.testApex = testApex
+	bundle.artApex = artApex
 	return bundle
 }
 
diff --git a/bpfix/Android.bp b/bpfix/Android.bp
index aec9ff9..e291578 100644
--- a/bpfix/Android.bp
+++ b/bpfix/Android.bp
@@ -28,9 +28,9 @@
 
 bootstrap_go_package {
     name: "bpfix-cmd",
-    pkgPath: "android/soong/bpfix/bpfix/cmd",
+    pkgPath: "android/soong/bpfix/cmd_lib",
     srcs: [
-        "cmd-lib/bpfix.go",
+        "cmd_lib/bpfix.go",
     ],
     deps: [
         "bpfix-lib",
diff --git a/bpfix/cmd/main.go b/bpfix/cmd/main.go
index 8ca16b4..ad68144 100644
--- a/bpfix/cmd/main.go
+++ b/bpfix/cmd/main.go
@@ -16,10 +16,8 @@
 
 package main
 
-import (
-	"android/soong/bpfix/bpfix/cmd"
-)
+import "android/soong/bpfix/cmd_lib"
 
 func main() {
-	cmd.Run()
+	cmd_lib.Run()
 }
diff --git a/bpfix/cmd-lib/bpfix.go b/bpfix/cmd_lib/bpfix.go
similarity index 99%
rename from bpfix/cmd-lib/bpfix.go
rename to bpfix/cmd_lib/bpfix.go
index 98122f2..f90f65b 100644
--- a/bpfix/cmd-lib/bpfix.go
+++ b/bpfix/cmd_lib/bpfix.go
@@ -16,7 +16,7 @@
 
 // TODO(jeffrygaston) should this file be consolidated with bpfmt.go?
 
-package cmd
+package cmd_lib
 
 import (
 	"bytes"
diff --git a/cc/check.go b/cc/check.go
index 4e9e160..46328e9 100644
--- a/cc/check.go
+++ b/cc/check.go
@@ -38,6 +38,11 @@
 			ctx.PropertyErrorf(prop, "Illegal flag `%s`", flag)
 		} else if flag == "--coverage" {
 			ctx.PropertyErrorf(prop, "Bad flag: `%s`, use native_coverage instead", flag)
+		} else if flag == "-Weverything" {
+			if !ctx.Config().IsEnvTrue("ANDROID_TEMPORARILY_ALLOW_WEVERYTHING") {
+				ctx.PropertyErrorf(prop, "-Weverything is not allowed in Android.bp files.  "+
+					"Build with `m ANDROID_TEMPORARILY_ALLOW_WEVERYTHING=true` to experiment locally with -Weverything.")
+			}
 		} else if strings.Contains(flag, " ") {
 			args := strings.Split(flag, " ")
 			if args[0] == "-include" {
diff --git a/cc/compiler.go b/cc/compiler.go
index bb40a5b..671861b 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -17,6 +17,7 @@
 import (
 	"fmt"
 	"path/filepath"
+	"regexp"
 	"strconv"
 	"strings"
 
@@ -252,6 +253,7 @@
 // per-target values, module type values, and per-module Blueprints properties
 func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags {
 	tc := ctx.toolchain()
+	modulePath := android.PathForModuleSrc(ctx).String()
 
 	compiler.srcsBeforeGen = android.PathsForModuleSrcExcludes(ctx, compiler.Properties.Srcs, compiler.Properties.Exclude_srcs)
 	compiler.srcsBeforeGen = append(compiler.srcsBeforeGen, deps.GeneratedSources...)
@@ -289,8 +291,8 @@
 
 	if compiler.Properties.Include_build_directory == nil ||
 		*compiler.Properties.Include_build_directory {
-		flags.Local.CommonFlags = append(flags.Local.CommonFlags, "-I"+android.PathForModuleSrc(ctx).String())
-		flags.Local.YasmFlags = append(flags.Local.YasmFlags, "-I"+android.PathForModuleSrc(ctx).String())
+		flags.Local.CommonFlags = append(flags.Local.CommonFlags, "-I"+modulePath)
+		flags.Local.YasmFlags = append(flags.Local.YasmFlags, "-I"+modulePath)
 	}
 
 	if !(ctx.useSdk() || ctx.useVndk()) || ctx.Host() {
@@ -381,7 +383,7 @@
 		"${config.CommonClangGlobalCflags}",
 		fmt.Sprintf("${config.%sClangGlobalCflags}", hod))
 
-	if strings.HasPrefix(android.PathForModuleSrc(ctx).String(), "external/") {
+	if isThirdParty(modulePath) {
 		flags.Global.CommonFlags = append([]string{"${config.ClangExternalCflags}"}, flags.Global.CommonFlags...)
 	}
 
@@ -438,7 +440,7 @@
 	// vendor/device specific things), we could extend this to be a ternary
 	// value.
 	strict := true
-	if strings.HasPrefix(android.PathForModuleSrc(ctx).String(), "external/") {
+	if strings.HasPrefix(modulePath, "external/") {
 		strict = false
 	}
 
@@ -580,3 +582,28 @@
 
 	return TransformSourceToObj(ctx, subdir, srcFiles, flags, pathDeps, cFlagsDeps)
 }
+
+var thirdPartyDirPrefixExceptions = []*regexp.Regexp{
+	regexp.MustCompile("^vendor/[^/]*google[^/]*/"),
+	regexp.MustCompile("^hardware/google/"),
+	regexp.MustCompile("^hardware/interfaces/"),
+	regexp.MustCompile("^hardware/libhardware[^/]*/"),
+	regexp.MustCompile("^hardware/ril/"),
+}
+
+func isThirdParty(path string) bool {
+	thirdPartyDirPrefixes := []string{"external/", "vendor/", "hardware/"}
+
+	for _, prefix := range thirdPartyDirPrefixes {
+		if strings.HasPrefix(path, prefix) {
+			for _, prefix := range thirdPartyDirPrefixExceptions {
+				if prefix.MatchString(path) {
+					return false
+				}
+			}
+			break
+		}
+	}
+
+	return true
+}
diff --git a/cc/compiler_test.go b/cc/compiler_test.go
new file mode 100644
index 0000000..c301388
--- /dev/null
+++ b/cc/compiler_test.go
@@ -0,0 +1,43 @@
+// Copyright 2019 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cc
+
+import (
+	"testing"
+)
+
+func TestIsThirdParty(t *testing.T) {
+	shouldFail := []string{
+		"external/foo/",
+		"vendor/bar/",
+		"hardware/underwater_jaguar/",
+	}
+	shouldPass := []string{
+		"vendor/google/cts/",
+		"hardware/google/pixel",
+		"hardware/interfaces/camera",
+		"hardware/ril/supa_ril",
+	}
+	for _, path := range shouldFail {
+		if !isThirdParty(path) {
+			t.Errorf("Expected %s to be considered third party", path)
+		}
+	}
+	for _, path := range shouldPass {
+		if isThirdParty(path) {
+			t.Errorf("Expected %s to *not* be considered third party", path)
+		}
+	}
+}
diff --git a/cc/config/clang.go b/cc/config/clang.go
index 1b6744e..eddc341 100644
--- a/cc/config/clang.go
+++ b/cc/config/clang.go
@@ -101,9 +101,6 @@
 		// not emit the table by default on Android since NDK still uses GNU binutils.
 		"-faddrsig",
 
-		// -Wimplicit-fallthrough is not enabled by -Wall.
-		"-Wimplicit-fallthrough",
-
 		// Help catch common 32/64-bit errors.
 		"-Werror=int-conversion",
 
@@ -138,6 +135,9 @@
 	}, " "))
 
 	pctx.StaticVariable("ClangExtraCppflags", strings.Join([]string{
+		// -Wimplicit-fallthrough is not enabled by -Wall.
+		"-Wimplicit-fallthrough",
+
 		// Enable clang's thread-safety annotations in libcxx.
 		"-D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS",
 
@@ -163,8 +163,8 @@
 		"-Wno-tautological-type-limit-compare",
 	}, " "))
 
-	// Extra cflags for projects under external/ directory to disable warnings that are infeasible
-	// to fix in all the external projects and their upstream repos.
+	// Extra cflags for external third-party projects to disable warnings that
+	// are infeasible to fix in all the external projects and their upstream repos.
 	pctx.StaticVariable("ClangExtraExternalCflags", strings.Join([]string{
 		"-Wno-enum-compare",
 		"-Wno-enum-compare-switch",
diff --git a/cc/fuzz.go b/cc/fuzz.go
index 1f06fb0..4b537c0 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -232,6 +232,8 @@
 			sharedLibraryInstallLocation(
 				lib, ctx.Host(), ctx.Arch().ArchType.String()))
 	}
+
+	sort.Strings(fuzz.installedSharedDeps)
 }
 
 func NewFuzz(hod android.HostOrDeviceSupported) *Module {
@@ -336,6 +338,9 @@
 		collectAllSharedDependencies(module, sharedLibraries, ctx)
 
 		for _, library := range sharedLibraries {
+			archDirs[archDir] = append(archDirs[archDir],
+				fileToZip{library, ccModule.Name() + "/lib"})
+
 			if _, exists := archSharedLibraryDeps[archAndLibraryKey{archDir, library}]; exists {
 				continue
 			}
@@ -377,12 +382,6 @@
 		}
 	})
 
-	// Add the shared library deps for packaging.
-	for key, _ := range archSharedLibraryDeps {
-		archDirs[key.ArchDir] = append(archDirs[key.ArchDir],
-			fileToZip{key.Library, "lib"})
-	}
-
 	for archDir, filesToZip := range archDirs {
 		arch := archDir.Base()
 		hostOrTarget := filepath.Base(filepath.Dir(archDir.String()))
diff --git a/cc/gen_stub_libs.py b/cc/gen_stub_libs.py
index 81bc398..0de703c 100755
--- a/cc/gen_stub_libs.py
+++ b/cc/gen_stub_libs.py
@@ -108,7 +108,7 @@
     return version.endswith('_PRIVATE') or version.endswith('_PLATFORM')
 
 
-def should_omit_version(version, arch, api, vndk, apex):
+def should_omit_version(version, arch, api, llndk, apex):
     """Returns True if the version section should be ommitted.
 
     We want to omit any sections that do not have any symbols we'll have in the
@@ -120,9 +120,9 @@
     if 'platform-only' in version.tags:
         return True
 
-    no_vndk_no_apex = 'vndk' not in version.tags and 'apex' not in version.tags
-    keep = no_vndk_no_apex or \
-           ('vndk' in version.tags and vndk) or \
+    no_llndk_no_apex = 'llndk' not in version.tags and 'apex' not in version.tags
+    keep = no_llndk_no_apex or \
+           ('llndk' in version.tags and llndk) or \
            ('apex' in version.tags and apex)
     if not keep:
         return True
@@ -133,11 +133,11 @@
     return False
 
 
-def should_omit_symbol(symbol, arch, api, vndk, apex):
+def should_omit_symbol(symbol, arch, api, llndk, apex):
     """Returns True if the symbol should be omitted."""
-    no_vndk_no_apex = 'vndk' not in symbol.tags and 'apex' not in symbol.tags
-    keep = no_vndk_no_apex or \
-           ('vndk' in symbol.tags and vndk) or \
+    no_llndk_no_apex = 'llndk' not in symbol.tags and 'apex' not in symbol.tags
+    keep = no_llndk_no_apex or \
+           ('llndk' in symbol.tags and llndk) or \
            ('apex' in symbol.tags and apex)
     if not keep:
         return True
@@ -250,12 +250,12 @@
 
 class SymbolFileParser(object):
     """Parses NDK symbol files."""
-    def __init__(self, input_file, api_map, arch, api, vndk, apex):
+    def __init__(self, input_file, api_map, arch, api, llndk, apex):
         self.input_file = input_file
         self.api_map = api_map
         self.arch = arch
         self.api = api
-        self.vndk = vndk
+        self.llndk = llndk
         self.apex = apex
         self.current_line = None
 
@@ -284,11 +284,11 @@
         symbol_names = set()
         multiply_defined_symbols = set()
         for version in versions:
-            if should_omit_version(version, self.arch, self.api, self.vndk, self.apex):
+            if should_omit_version(version, self.arch, self.api, self.llndk, self.apex):
                 continue
 
             for symbol in version.symbols:
-                if should_omit_symbol(symbol, self.arch, self.api, self.vndk, self.apex):
+                if should_omit_symbol(symbol, self.arch, self.api, self.llndk, self.apex):
                     continue
 
                 if symbol.name in symbol_names:
@@ -372,12 +372,12 @@
 
 class Generator(object):
     """Output generator that writes stub source files and version scripts."""
-    def __init__(self, src_file, version_script, arch, api, vndk, apex):
+    def __init__(self, src_file, version_script, arch, api, llndk, apex):
         self.src_file = src_file
         self.version_script = version_script
         self.arch = arch
         self.api = api
-        self.vndk = vndk
+        self.llndk = llndk
         self.apex = apex
 
     def write(self, versions):
@@ -387,14 +387,14 @@
 
     def write_version(self, version):
         """Writes a single version block's data to the output files."""
-        if should_omit_version(version, self.arch, self.api, self.vndk, self.apex):
+        if should_omit_version(version, self.arch, self.api, self.llndk, self.apex):
             return
 
         section_versioned = symbol_versioned_in_api(version.tags, self.api)
         version_empty = True
         pruned_symbols = []
         for symbol in version.symbols:
-            if should_omit_symbol(symbol, self.arch, self.api, self.vndk, self.apex):
+            if should_omit_symbol(symbol, self.arch, self.api, self.llndk, self.apex):
                 continue
 
             if symbol_versioned_in_api(symbol.tags, self.api):
@@ -456,7 +456,7 @@
         '--arch', choices=ALL_ARCHITECTURES, required=True,
         help='Architecture being targeted.')
     parser.add_argument(
-        '--vndk', action='store_true', help='Use the VNDK variant.')
+        '--llndk', action='store_true', help='Use the LLNDK variant.')
     parser.add_argument(
         '--apex', action='store_true', help='Use the APEX variant.')
 
@@ -493,14 +493,14 @@
     with open(args.symbol_file) as symbol_file:
         try:
             versions = SymbolFileParser(symbol_file, api_map, args.arch, api,
-                                        args.vndk, args.apex).parse()
+                                        args.llndk, args.apex).parse()
         except MultiplyDefinedSymbolError as ex:
             sys.exit('{}: error: {}'.format(args.symbol_file, ex))
 
     with open(args.stub_src, 'w') as src_file:
         with open(args.version_script, 'w') as version_file:
             generator = Generator(src_file, version_file, args.arch, api,
-                                  args.vndk, args.apex)
+                                  args.llndk, args.apex)
             generator.write(versions)
 
 
diff --git a/cc/llndk_library.go b/cc/llndk_library.go
index 3a5b3a6..f3ee5c1 100644
--- a/cc/llndk_library.go
+++ b/cc/llndk_library.go
@@ -86,7 +86,7 @@
 		// For non-enforcing devices, use "current"
 		vndk_ver = "current"
 	}
-	objs, versionScript := compileStubLibrary(ctx, flags, String(stub.Properties.Symbol_file), vndk_ver, "--vndk")
+	objs, versionScript := compileStubLibrary(ctx, flags, String(stub.Properties.Symbol_file), vndk_ver, "--llndk")
 	stub.versionScriptPath = versionScript
 	return objs
 }
diff --git a/cc/test_gen_stub_libs.py b/cc/test_gen_stub_libs.py
index 2ee9886..0b45e71 100755
--- a/cc/test_gen_stub_libs.py
+++ b/cc/test_gen_stub_libs.py
@@ -179,17 +179,17 @@
                 gsl.Version('foo', None, ['platform-only'], []), 'arm', 9,
                 False, False))
 
-    def test_omit_vndk(self):
+    def test_omit_llndk(self):
         self.assertTrue(
             gsl.should_omit_version(
-                gsl.Version('foo', None, ['vndk'], []), 'arm', 9, False, False))
+                gsl.Version('foo', None, ['llndk'], []), 'arm', 9, False, False))
 
         self.assertFalse(
             gsl.should_omit_version(
                 gsl.Version('foo', None, [], []), 'arm', 9, True, False))
         self.assertFalse(
             gsl.should_omit_version(
-                gsl.Version('foo', None, ['vndk'], []), 'arm', 9, True, False))
+                gsl.Version('foo', None, ['llndk'], []), 'arm', 9, True, False))
 
     def test_omit_apex(self):
         self.assertTrue(
@@ -231,16 +231,16 @@
 
 
 class OmitSymbolTest(unittest.TestCase):
-    def test_omit_vndk(self):
+    def test_omit_llndk(self):
         self.assertTrue(
             gsl.should_omit_symbol(
-                gsl.Symbol('foo', ['vndk']), 'arm', 9, False, False))
+                gsl.Symbol('foo', ['llndk']), 'arm', 9, False, False))
 
         self.assertFalse(
             gsl.should_omit_symbol(gsl.Symbol('foo', []), 'arm', 9, True, False))
         self.assertFalse(
             gsl.should_omit_symbol(
-                gsl.Symbol('foo', ['vndk']), 'arm', 9, True, False))
+                gsl.Symbol('foo', ['llndk']), 'arm', 9, True, False))
 
     def test_omit_apex(self):
         self.assertTrue(
@@ -441,12 +441,12 @@
 
         self.assertEqual(expected, versions)
 
-    def test_parse_vndk_apex_symbol(self):
+    def test_parse_llndk_apex_symbol(self):
         input_file = io.StringIO(textwrap.dedent("""\
             VERSION_1 {
                 foo;
-                bar; # vndk
-                baz; # vndk apex
+                bar; # llndk
+                baz; # llndk apex
                 qux; # apex
             };
         """))
@@ -459,8 +459,8 @@
 
         expected_symbols = [
             gsl.Symbol('foo', []),
-            gsl.Symbol('bar', ['vndk']),
-            gsl.Symbol('baz', ['vndk', 'apex']),
+            gsl.Symbol('bar', ['llndk']),
+            gsl.Symbol('baz', ['llndk', 'apex']),
             gsl.Symbol('qux', ['apex']),
         ]
         self.assertEqual(expected_symbols, version.symbols)
@@ -517,7 +517,7 @@
         self.assertEqual('', version_file.getvalue())
 
         version = gsl.Version('VERSION_1', None, [], [
-            gsl.Symbol('foo', ['vndk']),
+            gsl.Symbol('foo', ['llndk']),
         ])
         generator.write_version(version)
         self.assertEqual('', src_file.getvalue())
@@ -607,7 +607,7 @@
 
             VERSION_4 { # versioned=9
                 wibble;
-                wizzes; # vndk
+                wizzes; # llndk
                 waggle; # apex
             } VERSION_2;
 
@@ -749,10 +749,10 @@
 
             VERSION_4 { # versioned=9
                 wibble;
-                wizzes; # vndk
+                wizzes; # llndk
                 waggle; # apex
-                bubble; # apex vndk
-                duddle; # vndk apex
+                bubble; # apex llndk
+                duddle; # llndk apex
             } VERSION_2;
 
             VERSION_5 { # versioned=14
diff --git a/cmd/javac_wrapper/javac_wrapper.go b/cmd/javac_wrapper/javac_wrapper.go
index 7a448ba..4679906 100644
--- a/cmd/javac_wrapper/javac_wrapper.go
+++ b/cmd/javac_wrapper/javac_wrapper.go
@@ -31,6 +31,7 @@
 	"os"
 	"os/exec"
 	"regexp"
+	"strconv"
 	"syscall"
 )
 
@@ -80,10 +81,11 @@
 
 	pw.Close()
 
+	proc := processor{}
 	// Process subprocess stdout asynchronously
 	errCh := make(chan error)
 	go func() {
-		errCh <- process(pr, out)
+		errCh <- proc.process(pr, out)
 	}()
 
 	// Wait for subprocess to finish
@@ -117,14 +119,18 @@
 	return 0, nil
 }
 
-func process(r io.Reader, w io.Writer) error {
+type processor struct {
+	silencedWarnings int
+}
+
+func (proc *processor) process(r io.Reader, w io.Writer) error {
 	scanner := bufio.NewScanner(r)
 	// Some javac wrappers output the entire list of java files being
 	// compiled on a single line, which can be very large, set the maximum
 	// buffer size to 2MB.
 	scanner.Buffer(nil, 2*1024*1024)
 	for scanner.Scan() {
-		processLine(w, scanner.Text())
+		proc.processLine(w, scanner.Text())
 	}
 	err := scanner.Err()
 	if err != nil {
@@ -133,12 +139,32 @@
 	return nil
 }
 
-func processLine(w io.Writer, line string) {
+func (proc *processor) processLine(w io.Writer, line string) {
+	for _, f := range warningFilters {
+		if f.MatchString(line) {
+			proc.silencedWarnings++
+			return
+		}
+	}
 	for _, f := range filters {
 		if f.MatchString(line) {
 			return
 		}
 	}
+	if match := warningCount.FindStringSubmatch(line); match != nil {
+		c, err := strconv.Atoi(match[1])
+		if err == nil {
+			c -= proc.silencedWarnings
+			if c == 0 {
+				return
+			} else {
+				line = fmt.Sprintf("%d warning", c)
+				if c > 1 {
+					line += "s"
+				}
+			}
+		}
+	}
 	for _, p := range colorPatterns {
 		var matched bool
 		if line, matched = applyColor(line, p.color, p.re); matched {
@@ -170,12 +196,17 @@
 	{markerRe, green},
 }
 
+var warningCount = regexp.MustCompile(`^([0-9]+) warning(s)?$`)
+
+var warningFilters = []*regexp.Regexp{
+	regexp.MustCompile(`bootstrap class path not set in conjunction with -source`),
+}
+
 var filters = []*regexp.Regexp{
 	regexp.MustCompile(`Note: (Some input files|.*\.java) uses? or overrides? a deprecated API.`),
 	regexp.MustCompile(`Note: Recompile with -Xlint:deprecation for details.`),
 	regexp.MustCompile(`Note: (Some input files|.*\.java) uses? unchecked or unsafe operations.`),
 	regexp.MustCompile(`Note: Recompile with -Xlint:unchecked for details.`),
-	regexp.MustCompile(`bootstrap class path not set in conjunction with -source`),
 
 	regexp.MustCompile(`javadoc: warning - The old Doclet and Taglet APIs in the packages`),
 	regexp.MustCompile(`com.sun.javadoc, com.sun.tools.doclets and their implementations`),
diff --git a/cmd/javac_wrapper/javac_wrapper_test.go b/cmd/javac_wrapper/javac_wrapper_test.go
index ad657e7..ad23001 100644
--- a/cmd/javac_wrapper/javac_wrapper_test.go
+++ b/cmd/javac_wrapper/javac_wrapper_test.go
@@ -75,13 +75,29 @@
 `,
 		out: "\n",
 	},
+	{
+		in: `
+warning: [options] bootstrap class path not set in conjunction with -source 1.9\n
+1 warning
+`,
+		out: "\n",
+	},
+	{
+		in: `
+warning: foo
+warning: [options] bootstrap class path not set in conjunction with -source 1.9\n
+2 warnings
+`,
+		out: "\n\x1b[1m\x1b[35mwarning:\x1b[0m\x1b[1m foo\x1b[0m\n1 warning\n",
+	},
 }
 
 func TestJavacColorize(t *testing.T) {
 	for i, test := range testCases {
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
 			buf := new(bytes.Buffer)
-			err := process(bytes.NewReader([]byte(test.in)), buf)
+			proc := processor{}
+			err := proc.process(bytes.NewReader([]byte(test.in)), buf)
 			if err != nil {
 				t.Errorf("error: %q", err)
 			}
diff --git a/java/aar.go b/java/aar.go
index afe860c..d8db192 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -520,7 +520,7 @@
 }
 
 func (a *AARImport) sdkVersion() string {
-	return proptools.StringDefault(a.properties.Sdk_version, defaultSdkVersion(a))
+	return String(a.properties.Sdk_version)
 }
 
 func (a *AARImport) systemModules() string {
diff --git a/java/app.go b/java/app.go
index de12b73..d53d626 100644
--- a/java/app.go
+++ b/java/app.go
@@ -205,6 +205,7 @@
 
 func (a *AndroidApp) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	a.checkPlatformAPI(ctx)
+	a.checkSdkVersion(ctx)
 	a.generateAndroidBuildActions(ctx)
 }
 
diff --git a/java/app_test.go b/java/app_test.go
index 5b6ed54..7635f3d 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -666,6 +666,44 @@
 	}
 }
 
+func TestAppSdkVersionByPartition(t *testing.T) {
+	testJavaError(t, "sdk_version must have a value when the module is located at vendor or product", `
+		android_app {
+			name: "foo",
+			srcs: ["a.java"],
+			vendor: true,
+			platform_apis: true,
+		}
+	`)
+
+	testJava(t, `
+		android_app {
+			name: "bar",
+			srcs: ["b.java"],
+			platform_apis: true,
+		}
+	`)
+
+	for _, enforce := range []bool{true, false} {
+
+		config := testConfig(nil)
+		config.TestProductVariables.EnforceProductPartitionInterface = proptools.BoolPtr(enforce)
+		bp := `
+			android_app {
+				name: "foo",
+				srcs: ["a.java"],
+				product_specific: true,
+				platform_apis: true,
+			}
+		`
+		if enforce {
+			testJavaErrorWithConfig(t, "sdk_version must have a value when the module is located at vendor or product", bp, config)
+		} else {
+			testJavaWithConfig(t, bp, config)
+		}
+	}
+}
+
 func TestJNIPackaging(t *testing.T) {
 	ctx, _ := testJava(t, cc.GatherRequiredDepsForTest(android.Android)+`
 		cc_library {
diff --git a/java/config/config.go b/java/config/config.go
index 1c55961..333de32 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -87,12 +87,10 @@
 		return ctx.Config().Getenv("ANDROID_JAVA_HOME")
 	})
 	pctx.VariableFunc("JlinkVersion", func(ctx android.PackageVarContext) string {
-		switch ctx.Config().Getenv("EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN") {
-		case "false":
-			return "9"
-		default:
-			return "11"
+		if override := ctx.Config().Getenv("OVERRIDE_JLINK_VERSION_NUMBER"); override != "" {
+			return override
 		}
+		return "11"
 	})
 
 	pctx.SourcePathVariable("JavaToolchain", "${JavaHome}/bin")
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index 74ef667..a29665e 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -51,6 +51,7 @@
 
 type bootImageConfig struct {
 	name         string
+	stem         string
 	modules      []string
 	dexLocations []string
 	dexPaths     android.WritablePaths
@@ -71,7 +72,7 @@
 	// In addition, each .art file has an associated .oat and .vdex file, and an
 	// unstripped .oat file
 	for i, m := range image.modules {
-		name := image.name
+		name := image.stem
 		if i != 0 {
 			name += "-" + stemOf(m)
 		}
@@ -139,6 +140,12 @@
 	return false
 }
 
+func skipDexpreoptArtBootJars(ctx android.BuilderContext) bool {
+	// with EMMA_INSTRUMENT_FRAMEWORK=true ART boot class path libraries have dependencies on framework,
+	// therefore dexpreopt ART libraries cannot be dexpreopted in isolation => no ART boot image
+	return ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK")
+}
+
 type dexpreoptBootJars struct {
 	defaultBootImage *bootImage
 	otherImages      []*bootImage
@@ -146,6 +153,14 @@
 	dexpreoptConfigForMake android.WritablePath
 }
 
+// Accessor function for the apex package. Returns nil if dexpreopt is disabled.
+func DexpreoptedArtApexJars(ctx android.BuilderContext) map[android.ArchType]android.Paths {
+	if skipDexpreoptBootJars(ctx) || skipDexpreoptArtBootJars(ctx) {
+		return nil
+	}
+	return artBootImageConfig(ctx).imagesDeps
+}
+
 // dexpreoptBoot singleton rules
 func (d *dexpreoptBootJars) GenerateBuildActions(ctx android.SingletonContext) {
 	if skipDexpreoptBootJars(ctx) {
@@ -169,7 +184,12 @@
 
 	// Always create the default boot image first, to get a unique profile rule for all images.
 	d.defaultBootImage = buildBootImage(ctx, defaultBootImageConfig(ctx))
+	if !skipDexpreoptArtBootJars(ctx) {
+		// Create boot image for the ART apex (build artifacts are accessed via the global boot image config).
+		buildBootImage(ctx, artBootImageConfig(ctx))
+	}
 	if global.GenerateApexImage {
+		// Create boot images for the JIT-zygote experiment.
 		d.otherImages = append(d.otherImages, buildBootImage(ctx, apexBootImageConfig(ctx)))
 	}
 
@@ -178,8 +198,6 @@
 
 // buildBootImage takes a bootImageConfig, creates rules to build it, and returns a *bootImage.
 func buildBootImage(ctx android.SingletonContext, config bootImageConfig) *bootImage {
-	global := dexpreoptGlobalConfig(ctx)
-
 	image := newBootImage(ctx, config)
 
 	bootDexJars := make(android.Paths, len(image.modules))
@@ -223,12 +241,9 @@
 	bootFrameworkProfileRule(ctx, image, missingDeps)
 
 	var allFiles android.Paths
-
-	if !global.DisablePreopt {
-		for _, target := range image.targets {
-			files := buildBootImageRuleForArch(ctx, image, target.Arch.ArchType, profile, missingDeps)
-			allFiles = append(allFiles, files.Paths()...)
-		}
+	for _, target := range image.targets {
+		files := buildBootImageRuleForArch(ctx, image, target.Arch.ArchType, profile, missingDeps)
+		allFiles = append(allFiles, files.Paths()...)
 	}
 
 	if image.zip != nil {
@@ -251,7 +266,7 @@
 	global := dexpreoptGlobalConfig(ctx)
 
 	symbolsDir := image.symbolsDir.Join(ctx, "system/framework", arch.String())
-	symbolsFile := symbolsDir.Join(ctx, image.name+".oat")
+	symbolsFile := symbolsDir.Join(ctx, image.stem+".oat")
 	outputDir := image.dir.Join(ctx, "system/framework", arch.String())
 	outputPath := image.images[arch]
 	oatLocation := pathtools.ReplaceExtension(dexpreopt.PathToLocation(outputPath, arch), "oat")
@@ -381,8 +396,9 @@
 	if global.DisableGenerateProfile || ctx.Config().IsPdkBuild() || ctx.Config().UnbundledBuild() {
 		return nil
 	}
-	return ctx.Config().Once(bootImageProfileRuleKey, func() interface{} {
+	profile := ctx.Config().Once(bootImageProfileRuleKey, func() interface{} {
 		tools := global.Tools
+		defaultProfile := "frameworks/base/config/boot-image-profile.txt"
 
 		rule := android.NewRuleBuilder()
 		rule.MissingDeps(missingDeps)
@@ -394,18 +410,13 @@
 			bootImageProfile = combinedBootImageProfile
 		} else if len(global.BootImageProfiles) == 1 {
 			bootImageProfile = global.BootImageProfiles[0]
+		} else if path := android.ExistentPathForSource(ctx, defaultProfile); path.Valid() {
+			bootImageProfile = path.Path()
 		} else {
-			// If not set, use the default.  Some branches like master-art-host don't have frameworks/base, so manually
-			// handle the case that the default is missing.  Those branches won't attempt to build the profile rule,
-			// and if they do they'll get a missing deps error.
-			defaultProfile := "frameworks/base/config/boot-image-profile.txt"
-			path := android.ExistentPathForSource(ctx, defaultProfile)
-			if path.Valid() {
-				bootImageProfile = path.Path()
-			} else {
-				missingDeps = append(missingDeps, defaultProfile)
-				bootImageProfile = android.PathForOutput(ctx, "missing")
-			}
+			// No profile (not even a default one, which is the case on some branches
+			// like master-art-host that don't have frameworks/base).
+			// Return nil and continue without profile.
+			return nil
 		}
 
 		profile := image.dir.Join(ctx, "boot.prof")
@@ -425,7 +436,11 @@
 		image.profileInstalls = rule.Installs()
 
 		return profile
-	}).(android.WritablePath)
+	})
+	if profile == nil {
+		return nil // wrap nil into a typed pointer with value nil
+	}
+	return profile.(android.WritablePath)
 }
 
 var bootImageProfileRuleKey = android.NewOnceKey("bootImageProfileRule")
diff --git a/java/dexpreopt_bootjars_test.go b/java/dexpreopt_bootjars_test.go
index 244bd52..a684ab2 100644
--- a/java/dexpreopt_bootjars_test.go
+++ b/java/dexpreopt_bootjars_test.go
@@ -62,7 +62,6 @@
 	bootArt := dexpreoptBootJars.Output("boot.art")
 
 	expectedInputs := []string{
-		"dex_bootjars/boot.prof",
 		"dex_bootjars_input/foo.jar",
 		"dex_bootjars_input/bar.jar",
 		"dex_bootjars_input/baz.jar",
diff --git a/java/dexpreopt_config.go b/java/dexpreopt_config.go
index b3b1317..a6661b3 100644
--- a/java/dexpreopt_config.go
+++ b/java/dexpreopt_config.go
@@ -106,15 +106,20 @@
 	return moduleName
 }
 
-func getBootImageConfig(ctx android.PathContext, key android.OnceKey, name string,
-	needZip bool) bootImageConfig {
+// Construct a variant of the global config for dexpreopted bootclasspath jars. The variants differ
+// in the list of input jars (libcore, framework, or both), in the naming scheme for the dexpreopt
+// files (ART recognizes "apex" names as special), and whether to include a zip archive.
+//
+// 'name' is a string unique for each profile (used in directory names and ninja rule names)
+// 'stem' is the basename of the image: the resulting filenames are <stem>[-<jar>].{art,oat,vdex}.
+func getBootImageConfig(ctx android.PathContext, key android.OnceKey, name string, stem string,
+	needZip bool, artApexJarsOnly bool) bootImageConfig {
+
 	return ctx.Config().Once(key, func() interface{} {
 		global := dexpreoptGlobalConfig(ctx)
 
 		artModules := global.ArtApexJars
-		nonFrameworkModules := concat(artModules, global.ProductUpdatableBootModules)
-		frameworkModules := android.RemoveListFromList(global.BootJars, nonFrameworkModules)
-		imageModules := concat(artModules, frameworkModules)
+		imageModules := artModules
 
 		var bootLocations []string
 
@@ -123,9 +128,15 @@
 				filepath.Join("/apex/com.android.art/javalib", stemOf(m)+".jar"))
 		}
 
-		for _, m := range frameworkModules {
-			bootLocations = append(bootLocations,
-				filepath.Join("/system/framework", stemOf(m)+".jar"))
+		if !artApexJarsOnly {
+			nonFrameworkModules := concat(artModules, global.ProductUpdatableBootModules)
+			frameworkModules := android.RemoveListFromList(global.BootJars, nonFrameworkModules)
+			imageModules = concat(imageModules, frameworkModules)
+
+			for _, m := range frameworkModules {
+				bootLocations = append(bootLocations,
+					filepath.Join("/system/framework", stemOf(m)+".jar"))
+			}
 		}
 
 		// The path to bootclasspath dex files needs to be known at module GenerateAndroidBuildAction time, before
@@ -143,13 +154,14 @@
 
 		var zip android.WritablePath
 		if needZip {
-			zip = dir.Join(ctx, name+".zip")
+			zip = dir.Join(ctx, stem+".zip")
 		}
 
 		targets := dexpreoptTargets(ctx)
 
 		imageConfig := bootImageConfig{
 			name:         name,
+			stem:         stem,
 			modules:      imageModules,
 			dexLocations: bootLocations,
 			dexPaths:     bootDexPaths,
@@ -163,7 +175,7 @@
 
 		for _, target := range targets {
 			imageDir := dir.Join(ctx, "system/framework", target.Arch.ArchType.String())
-			imageConfig.images[target.Arch.ArchType] = imageDir.Join(ctx, name+".art")
+			imageConfig.images[target.Arch.ArchType] = imageDir.Join(ctx, stem+".art")
 
 			imagesDeps := make([]android.Path, 0, len(imageConfig.modules)*3)
 			for _, dep := range imageConfig.moduleFiles(ctx, imageDir, ".art", ".oat", ".vdex") {
@@ -176,15 +188,25 @@
 	}).(bootImageConfig)
 }
 
+// Default config is the one that goes in the system image. It includes both libcore and framework.
 var defaultBootImageConfigKey = android.NewOnceKey("defaultBootImageConfig")
-var apexBootImageConfigKey = android.NewOnceKey("apexBootImageConfig")
 
 func defaultBootImageConfig(ctx android.PathContext) bootImageConfig {
-	return getBootImageConfig(ctx, defaultBootImageConfigKey, "boot", true)
+	return getBootImageConfig(ctx, defaultBootImageConfigKey, "boot", "boot", true, false)
 }
 
+// Apex config is used for the JIT-zygote experiment. It includes both libcore and framework, but AOT-compiles only libcore.
+var apexBootImageConfigKey = android.NewOnceKey("apexBootImageConfig")
+
 func apexBootImageConfig(ctx android.PathContext) bootImageConfig {
-	return getBootImageConfig(ctx, apexBootImageConfigKey, "apex", false)
+	return getBootImageConfig(ctx, apexBootImageConfigKey, "apex", "apex", false, false)
+}
+
+// ART config is the one used for the ART apex. It includes only libcore.
+var artBootImageConfigKey = android.NewOnceKey("artBootImageConfig")
+
+func artBootImageConfig(ctx android.PathContext) bootImageConfig {
+	return getBootImageConfig(ctx, artBootImageConfigKey, "art", "boot", false, true)
 }
 
 func defaultBootclasspath(ctx android.PathContext) []string {
diff --git a/java/droiddoc.go b/java/droiddoc.go
index c898498..54f93fe 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -404,7 +404,7 @@
 var _ android.OutputFileProducer = (*Javadoc)(nil)
 
 func (j *Javadoc) sdkVersion() string {
-	return proptools.StringDefault(j.properties.Sdk_version, defaultSdkVersion(j))
+	return String(j.properties.Sdk_version)
 }
 
 func (j *Javadoc) systemModules() string {
diff --git a/java/java.go b/java/java.go
index de2ca9e..9bbdff7 100644
--- a/java/java.go
+++ b/java/java.go
@@ -54,6 +54,18 @@
 	android.RegisterSingletonType("kythe_java_extract", kytheExtractJavaFactory)
 }
 
+func (j *Module) checkSdkVersion(ctx android.ModuleContext) {
+	if j.SocSpecific() || j.DeviceSpecific() ||
+		(j.ProductSpecific() && ctx.Config().EnforceProductPartitionInterface()) {
+		if sc, ok := ctx.Module().(sdkContext); ok {
+			if sc.sdkVersion() == "" {
+				ctx.PropertyErrorf("sdk_version",
+					"sdk_version must have a value when the module is located at vendor or product(only if PRODUCT_ENFORCE_PRODUCT_PARTITION_INTERFACE is set).")
+			}
+		}
+	}
+}
+
 func (j *Module) checkPlatformAPI(ctx android.ModuleContext) {
 	if sc, ok := ctx.Module().(sdkContext); ok {
 		usePlatformAPI := proptools.Bool(j.deviceProperties.Platform_apis)
@@ -452,18 +464,6 @@
 	usesLibTag            = dependencyTag{name: "uses-library"}
 )
 
-func defaultSdkVersion(ctx checkVendorModuleContext) string {
-	if ctx.SocSpecific() || ctx.DeviceSpecific() {
-		return "system_current"
-	}
-	return ""
-}
-
-type checkVendorModuleContext interface {
-	SocSpecific() bool
-	DeviceSpecific() bool
-}
-
 type sdkDep struct {
 	useModule, useFiles, useDefaultLibs, invalidVersion bool
 
@@ -510,7 +510,7 @@
 }
 
 func (j *Module) sdkVersion() string {
-	return proptools.StringDefault(j.deviceProperties.Sdk_version, defaultSdkVersion(j))
+	return String(j.deviceProperties.Sdk_version)
 }
 
 func (j *Module) systemModules() string {
@@ -1641,6 +1641,7 @@
 }
 
 func (j *Library) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	j.checkSdkVersion(ctx)
 	j.dexpreopter.installPath = android.PathForModuleInstall(ctx, "framework", j.Stem()+".jar")
 	j.dexpreopter.isSDKLibrary = j.deviceProperties.IsSDKLibrary
 	j.dexpreopter.isInstallable = Bool(j.properties.Installable)
@@ -1984,7 +1985,7 @@
 }
 
 func (j *Import) sdkVersion() string {
-	return proptools.StringDefault(j.properties.Sdk_version, defaultSdkVersion(j))
+	return String(j.properties.Sdk_version)
 }
 
 func (j *Import) minSdkVersion() string {
diff --git a/java/java_test.go b/java/java_test.go
index a6ae503..e7b68dd 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -23,6 +23,8 @@
 	"strings"
 	"testing"
 
+	"github.com/google/blueprint/proptools"
+
 	"android/soong/android"
 	"android/soong/cc"
 	"android/soong/dexpreopt"
@@ -228,9 +230,13 @@
 	android.FailIfErrored(t, errs)
 }
 
-func testJavaError(t *testing.T, pattern string, bp string) {
+func testJavaError(t *testing.T, pattern string, bp string) (*android.TestContext, android.Config) {
 	t.Helper()
-	config := testConfig(nil)
+	return testJavaErrorWithConfig(t, pattern, bp, testConfig(nil))
+}
+
+func testJavaErrorWithConfig(t *testing.T, pattern string, bp string, config android.Config) (*android.TestContext, android.Config) {
+	t.Helper()
 	ctx := testContext(bp, nil)
 
 	pathCtx := android.PathContextForTesting(config, nil)
@@ -240,20 +246,26 @@
 	_, errs := ctx.ParseBlueprintsFiles("Android.bp")
 	if len(errs) > 0 {
 		android.FailIfNoMatchingErrors(t, pattern, errs)
-		return
+		return ctx, config
 	}
 	_, errs = ctx.PrepareBuildActions(config)
 	if len(errs) > 0 {
 		android.FailIfNoMatchingErrors(t, pattern, errs)
-		return
+		return ctx, config
 	}
 
 	t.Fatalf("missing expected error %q (0 errors are returned)", pattern)
+
+	return ctx, config
 }
 
 func testJava(t *testing.T, bp string) (*android.TestContext, android.Config) {
 	t.Helper()
-	config := testConfig(nil)
+	return testJavaWithConfig(t, bp, testConfig(nil))
+}
+
+func testJavaWithConfig(t *testing.T, bp string, config android.Config) (*android.TestContext, android.Config) {
+	t.Helper()
 	ctx := testContext(bp, nil)
 	run(t, ctx, config)
 
@@ -315,29 +327,38 @@
 	}
 }
 
-func TestSdkVersion(t *testing.T) {
-	ctx, _ := testJava(t, `
+func TestSdkVersionByPartition(t *testing.T) {
+	testJavaError(t, "sdk_version must have a value when the module is located at vendor or product", `
 		java_library {
 			name: "foo",
 			srcs: ["a.java"],
 			vendor: true,
 		}
+	`)
 
+	testJava(t, `
 		java_library {
 			name: "bar",
 			srcs: ["b.java"],
 		}
 	`)
 
-	foo := ctx.ModuleForTests("foo", "android_common").Module().(*Library)
-	bar := ctx.ModuleForTests("bar", "android_common").Module().(*Library)
+	for _, enforce := range []bool{true, false} {
 
-	if foo.sdkVersion() != "system_current" {
-		t.Errorf("If sdk version of vendor module is empty, it must change to system_current.")
-	}
-
-	if bar.sdkVersion() != "" {
-		t.Errorf("If sdk version of non-vendor module is empty, it keeps empty.")
+		config := testConfig(nil)
+		config.TestProductVariables.EnforceProductPartitionInterface = proptools.BoolPtr(enforce)
+		bp := `
+			java_library {
+				name: "foo",
+				srcs: ["a.java"],
+				product_specific: true,
+			}
+		`
+		if enforce {
+			testJavaErrorWithConfig(t, "sdk_version must have a value when the module is located at vendor or product", bp, config)
+		} else {
+			testJavaWithConfig(t, bp, config)
+		}
 	}
 }
 
diff --git a/androidmk/partner_androidmk/Android.bp b/partner/Android.bp
similarity index 71%
rename from androidmk/partner_androidmk/Android.bp
rename to partner/Android.bp
index 532116a..f2ced8d 100644
--- a/androidmk/partner_androidmk/Android.bp
+++ b/partner/Android.bp
@@ -1,4 +1,4 @@
-// Copyright 2015 Google Inc. All rights reserved.
+// Copyright 2019 Google Inc. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -19,31 +19,31 @@
 blueprint_go_binary {
     name: "partner_androidmk",
     srcs: [
-        "partner_androidmk/androidmk.go",
+        "androidmk/androidmk.go",
     ],
     testSrcs: [
-        "partner_androidmk/androidmk_test.go",
+        "androidmk/androidmk_test.go",
     ],
     deps: [
         "androidmk-lib",
-        "partner_bpfix_extensions",
+        "partner-bpfix-extensions",
     ],
 }
 
 blueprint_go_binary {
     name: "partner_bpfix",
     srcs: [
-        "partner_bpfix/bpfix.go",
+        "bpfix/bpfix.go",
     ],
     deps: [
         "bpfix-cmd",
-        "partner_bpfix_extensions",
+        "partner-bpfix-extensions",
     ],
 }
 
 bootstrap_go_package {
-    name: "partner_bpfix_extensions",
-    pkgPath: "partner/android/bpfix/extensions",
-    srcs: ["fixes/headers.go"],
+    name: "partner-bpfix-extensions",
+    pkgPath: "android/soong/partner/bpfix/extensions",
+    srcs: ["bpfix/extensions/headers.go"],
     deps: ["bpfix-lib"],
 }
diff --git a/androidmk/partner_androidmk/partner_androidmk/androidmk.go b/partner/androidmk/androidmk.go
similarity index 96%
rename from androidmk/partner_androidmk/partner_androidmk/androidmk.go
rename to partner/androidmk/androidmk.go
index af8cdf3..f49981b 100644
--- a/androidmk/partner_androidmk/partner_androidmk/androidmk.go
+++ b/partner/androidmk/androidmk.go
@@ -23,7 +23,7 @@
 
 	"android/soong/androidmk/androidmk"
 
-	_ "partner/android/bpfix/extensions"
+	_ "android/soong/partner/bpfix/extensions"
 )
 
 var usage = func() {
diff --git a/androidmk/partner_androidmk/partner_androidmk/androidmk_test.go b/partner/androidmk/androidmk_test.go
similarity index 97%
rename from androidmk/partner_androidmk/partner_androidmk/androidmk_test.go
rename to partner/androidmk/androidmk_test.go
index ff04e88..6bae836 100644
--- a/androidmk/partner_androidmk/partner_androidmk/androidmk_test.go
+++ b/partner/androidmk/androidmk_test.go
@@ -23,7 +23,7 @@
 	"android/soong/androidmk/androidmk"
 	"android/soong/bpfix/bpfix"
 
-	_ "partner/android/bpfix/extensions"
+	_ "android/soong/partner/bpfix/extensions"
 )
 
 var testCases = []struct {
diff --git a/androidmk/partner_androidmk/partner_bpfix/bpfix.go b/partner/bpfix/bpfix.go
similarity index 88%
rename from androidmk/partner_androidmk/partner_bpfix/bpfix.go
rename to partner/bpfix/bpfix.go
index 2c8e0a8..687fe1c 100644
--- a/androidmk/partner_androidmk/partner_bpfix/bpfix.go
+++ b/partner/bpfix/bpfix.go
@@ -17,11 +17,11 @@
 package main
 
 import (
-	"android/soong/bpfix/bpfix/cmd"
+	"android/soong/bpfix/cmd_lib"
 
-	_ "partner/android/bpfix/extensions"
+	_ "android/soong/partner/bpfix/extensions"
 )
 
 func main() {
-	cmd.Run()
+	cmd_lib.Run()
 }
diff --git a/androidmk/partner_androidmk/fixes/headers.go b/partner/bpfix/extensions/headers.go
similarity index 100%
rename from androidmk/partner_androidmk/fixes/headers.go
rename to partner/bpfix/extensions/headers.go
diff --git a/ui/build/config.go b/ui/build/config.go
index 686ca3e..92aee4d 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -219,8 +219,8 @@
 		if override, ok := ret.environ.Get("OVERRIDE_ANDROID_JAVA_HOME"); ok {
 			return override
 		}
-		if toolchain9, ok := ret.environ.Get("EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN"); ok && toolchain9 == "false" {
-			return java9Home
+		if toolchain11, ok := ret.environ.Get("EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN"); ok && toolchain11 != "true" {
+			ctx.Fatalln("The environment variable EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN is no longer supported. An OpenJDK 11 toolchain is now the global default.")
 		}
 		return java11Home
 	}()